Simon Hawthorne wrote:
Hi

I'm told there is some sort of sealant I can paint on external walls
that will help repel water, and hopefully prevent damp getting into
the walls.

I can't find anything on the internet - can anyone help?

Thanks in advance

Simon


On a lot of walls this is a bad idea, and in fact makes things worse.

If you have a problem with damp, the solution is normally to fix the
cause of the damp.


NT